New York Consolidated Laws, Uniform Commercial Code - UCC § 3-506. Time Allowed for Acceptance or Payment

(1) Acceptance may be deferred without dishonor until the close of the next business day following presentment.  The holder may also in a good faith effort to obtain acceptance and without either dishonor of the instrument or discharge of secondary parties allow postponement of acceptance for an additional business day.

(2) Except as a longer time is allowed in the case of documentary drafts drawn under a letter of credit, and unless an earlier time is agreed to by the party to pay, payment of an instrument may be deferred without dishonor pending reasonable examination to determine whether it is properly payable, but payment must be made in any event before the close of business on the day of presentment.